First Measurement of Charm Production in its Fixed-Target Configuration at the LHC
The first measurement of heavy-flavor production by the LHCb experiment in its fixed-target mode is presented. The production of J / ψ and D 0 mesons is studied with beams of protons of different energies colliding with gaseous targets of helium and argon with nucleon-nucleon center-of-mass energies...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/171183 |
| Acceso en línea: | https://hdl.handle.net/2445/171183 |
| Access Level: | acceso abierto |
| Palabra clave: | Cromodinàmica quàntica Quarks Col·lisions d'ions pesats Quantum chromodynamics Heavy ion collision |
| Sumario: | The first measurement of heavy-flavor production by the LHCb experiment in its fixed-target mode is presented. The production of J / ψ and D 0 mesons is studied with beams of protons of different energies colliding with gaseous targets of helium and argon with nucleon-nucleon center-of-mass energies of √ s NN = 86.6 and 110.4 GeV, respectively. The J / ψ and D 0 production cross sections in p He collisions in the rapidity range [2, 4.6] are found to be σ J / ψ = 652 ± 33 ( stat ) ± 42 ( syst ) nb / nucleon and σ D 0 = 80.8 ± 2.4 ( stat ) ± 6.3 ( syst ) μ b / nucleon , where the first uncertainty is statistical and the second is systematic. No evidence for a substantial intrinsic charm content of the nucleon is observed in the large Bjorken- x region. |
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